From 3a4477413a62ef928c26c4137dfc6668d22df297 Mon Sep 17 00:00:00 2001
From: Michael Drake <michael.drake@codethink.co.uk>
Date: Sat, 3 Aug 2019 11:00:09 +0100
Subject: [PATCH] Framebuffer: Add keyboard controls for scaling.

---
 frontends/framebuffer/gui.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/frontends/framebuffer/gui.c b/frontends/framebuffer/gui.c
index 74f6100a5..6cbcca85d 100644
--- a/frontends/framebuffer/gui.c
+++ b/frontends/framebuffer/gui.c
@@ -910,6 +910,40 @@ fb_browser_window_input(fbtk_widget_t *widget, fbtk_callback_info *cbi)
 				widget_scroll_y(gw, 100, false);
 			break;
 
+		case NSFB_KEY_MINUS:
+			if (modifier & FBTK_MOD_RCTRL ||
+					modifier & FBTK_MOD_LCTRL) {
+				float scale = browser_window_get_scale(gw->bw);
+				scale -= 0.1;
+				if (scale < 0.1) {
+					scale = 0.1;
+				}
+				if (scale > 0.95 && scale < 1.05) {
+					scale = 1;
+				}
+				browser_window_set_scale(gw->bw, scale, true);
+			}
+			break;
+
+		case NSFB_KEY_EQUALS: /* PLUS */
+			if (modifier & FBTK_MOD_RCTRL ||
+					modifier & FBTK_MOD_LCTRL) {
+				float scale = browser_window_get_scale(gw->bw);
+				scale += 0.1;
+				if (scale > 0.95 && scale < 1.05) {
+					scale = 1;
+				}
+				browser_window_set_scale(gw->bw, scale, true);
+			}
+			break;
+
+		case NSFB_KEY_0: /* PLUS */
+			if (modifier & FBTK_MOD_RCTRL ||
+					modifier & FBTK_MOD_LCTRL) {
+				browser_window_set_scale(gw->bw, 1, true);
+			}
+			break;
+
 		case NSFB_KEY_RSHIFT:
 			modifier |= FBTK_MOD_RSHIFT;
 			break;